PSI - Issue 28

D. Rigon et al. / Procedia Structural Integrity 28 (2020) 1655–1663 Rigon et al. / Structural Integrity Procedia 00 (2019) 000–000

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4

The static mechanical properties summarized in this works are: Young’s modulus (E), the engineering tensile proof stress (σ Y ), the engineering ultimate tensile strength (σ UTS ), and the strain at fracture (ε B ). The fatigue tests relevant to the plastics considered in this work are expressed in terms of range of nominal stress Δσ = σ max - σ min against the number of cycles to failure. According to the available data, fully-reversed (R=-1) as well as pulsating (R= 0) fatigue test results are summarised (i.e. for R=-1, Δσ = 2σ max while for R= 0 Δσ = σ max ).

Table 1. Mechanical properties of virgin and recycled ABS produced by IM and FDM. Material Technology infill density [%] specimen orientation infill pattern E [GPa] σ Y [MPa]

references

σ UTS [MPa] 43-47

ε B [%]

vABS

IM

\

\

\

n.a. n.a. 1.61 2.16 1.70 1.59 1.49 1.04 1.04 1.28 1.25 n.a.

43-47

12-40

Marissen (2001)

n.a.

44.3 27.0 44.0 48.5 42.4 41.7 25.2 10.1 16.9 17.8 23.2 20.2 33.6 9.2

24

Farzadfar et al. (2014) Ziemian et al. (2015)

26.3

n.a.

n.a. n.a. n.a.

19

Park et al. (2015) Padzi et al. (2017)

n.a.

rABS

IM

\

\

\

11.0

Farzadfar et al. (2014) Czyzewski et al. (2017) Ziemian et al. (2015) Ziemian et al. (2015) Ziemian et al. (2015) Ziemian et al. (2015)

41.7 24.2

5.6 n.a. n.a. n.a. n.a. n.a. n.a. n.a.

vABS

FDM

100 100 100 100

F F F F F F F F

0°

45° 90°

9.4 8.6

±45°

15.3

\ \ \

n.a.

n.a.

Padzi et al (2017) Jap et al. (2019) Jap et al. (2019)

±45°

n.a. n.a.

23.2 20.2 33.6

0°/90°

rABS

FDM

100

±45°

1.38

3.7

Czyzewski et al. (2017)

60

50

max. value of vABS (IM) (Table 1)

40

30

min. value of vABS (IM) (Table 1)

σ UTS [MPa]

20

63% 66%

10

0

Figure 3. Ultimate tensile strength results of virgin and recycled ABS produced by IM and FDM (see ref. in table 1). The ABS_IM is taken as the reference materials, where the dotted lines refer to the minimum and maximum value found in the list of refs. reported in table 1. For the other bars, the error is equal to one standard deviation of the results (data are taken from Refs. reported in table 1).